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@uitrit tant @anni @Hirn T. W. PORTER AND K. PORTER, OF BOSTON,MASSACHUSETTS, vASSIGNORS TO THEMSELVES AND CHARLES L. .MARSTON Lettere.Parent No. 75,973, dated darcL 24, ISGS.

IMPROVEMENT IN GARRIAGES.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, T. W. PORTER and H. K. PORTER, ot Boston, in thecounty of Suffolk, and State of Massachusetts, have invented a new anduseful Improvement in Cai-riegos; and we do hereby declare that the'followingis a full, clear, and exact description of the construction andoperation of the samefreierencevbeing had to the accompanying drawings,ina-king a part of this specification, in which- Figure 1 is aperspective View of a side-spring shackle.

Figure 2 is a. longitudinal 'vertical section of the same.

Figure 3 is a perspective View of a metallic hanging-bar end.

Figure 4 is a longitudinal vertical section ofthe same.

FigureisV n. perspective View of a metallic hanging-iron socket.

Figure 6 is a transverse section ofthe same, taken in the-axis of thehanging iroir.

Figure 7 is a perspective-view of a metallic'han'gingioni- .Figure 8 isa longitudinal section of the same.

Figure 9 is a top view of an axle-yoke and perch-stay.

Figure I0 is a perspective view of a. metallic head-block.

Figure 11 is a vertical section, taken in the axis of the perch.

Figure I2 is a perspective View oi' a pole-crab; and

Figure 13 is a horizontal section of the same.

Similar letters indicate corresponding parts in the several figures ofthe same device.

The nature of our improvements consists in an improved spring-shackle,consisting of a three-sided link, and a bed-plate with a solid eye,` andformed to, receive an inverted axle-clip; the link and bed-plate beingunited by a wrought-iron bolt or rivet; in an improved hanging-bar end,so constructed as to receive the eye of the hanging iron in a cup orsocket; in a4 hangingfiron cup,forrned to embrac'e and secure the woodof the hang-ing har,- yet allowing the usual wood finish on the bar-end;in a hollow metallic hanging bar; in axlc-yokesof malleable iron,combined with perch-stays of' wrought iron; in hollow metallichead-blocks, with the, perchcouplings, formed upon the l1eud-block; andin a pole-eral), formed with the lateral arms hollow, as also hollowpele-strep studs.

All the foregoing parts being formed of malleable iron, in order to givethem their peculiar construction, und at much less cost than if formedof wrought iron in the usual manner.

In figs. 1 and 2, A represents the bod-plate, which is formed with asolid eye, through which passes the rivet a two holes I1 b for the'endsoi' the clip, and a stud, e, which serves to prevent lateral motion ofthe plate upon the bed.4 The link Il is formed three-sided, or with twoflut sides, d fZ,yvunitcdat one end by the bar e, upon which bar theeyes of the spring are closed; at one end ofthe sides CZ el are eyesforthe rivet a. By thus forming the link three-sided, and combining it withthe bed-plate by a rivet, the eyes of both are cast solid, instead ofone being castopen in the usual clumsy manner. '.lhe har c is of asmaller diameter than the ends of sides d d, so that the projecting edgeof the-sides curtains the eyes in the spring-ends. 'By forming thebedplate like a lclip-yoke, holes through either the hedor axle areavoided, thus leaving full'strength, at less cost than in the commonmethod.

In figs. 3 and 4, A represents the end of the hanging bar, upon which isfitted a metallic cap or end, B, which cncloses the end of the bar in asocket, while straps extend a short distance upon the upper and undersides ofthe bar, and an end nish terminates the outer end of thesoclret.Where the hangingiron restsis a circular rim, a, surrounding the holeZ1, in which the hangingiron bolt is inserted. The cavity or cup thusformed .serves to receive the eye ofthe hanging har, as is plainly shownin fig. 6'.

In figs. 5 and 6, A represents the hanging-bar,'and B a metallic socketor saddle, which is formed to sit ast-ride of and prevent the splittingof the bar, asis shown, the two projections e c, enelo'sing and bearingagainst the sides of the bar, while two small perforated ears, e e, bearupon the top ofthe bar, and are the means of attaching thesaddlethereto.4 d is a circular rim cast upon the saddle, and in the cupthus formed by the rim the downward-projecting eye, formed uponthehangingiron a, is inserted, resting upon a disk, of leather f, whilea screw-bolt, b, passing through the eye ofthe hangingiron a, the bottomof the saddle B, andthe hanging bar A., serves to hold the hang'ing ironin pla-ce; the rim, serving to prevent all horizontal strain upon thebolt, or dange'r of rending the bar apart.

-In figs. 7 and 8, A represents a metallic hanging bar, formed hollowbeneath, but presenting a continuous surface at the sides and top.Around the bolt holes bb aire formed circular rims a a., thus forming acup, which' receives the eye ofthe hanging iron, as shown in tig. 6, forthe purpose of relieving the hanging-bar bolt, which passes throughholes b 6,'`ron1'lateral strain. c c are partitions, which unite ltheshell of the bar, and through the two central partitions the bolts d alpass, which secure the bar to spring e,.as' shown. `A bar 4thus formedcan be graceful in appearance and but slighly heavier than of wood. v

In tig. 9, A represents a, malleable-iron axle-clip yoke, formed withthe usual axle-step a, and the clipholes b Z1, while a short socket enextends at one end, in which is inserted the wrought-iron perch-stay d.This stay may be connected with the yoke by a male. and female-screwthread, or it may be laid in tlie mould, and the malleable iron castupon it. i I

In gs. 10 and 11, A represents a metallic head-block, which is formedhollow in the same manner as the metallic hanging bar, shown in figs. 7and 8, that is, it has a continuous surface at the sides and on the t0p,except at the spring-seat, there being a cavity, b, extending betweenthe bolt-holes ff.of the fifth-wheel. Through the centre partition isthe king-bolt hole (i, and on either side ofthe centre are'thincross-bars, through which pass the spring-bolts in holes-e e. ais theperch-coupling, which is formed upon and is part of the head-block. B isthe perch, and c is a wrought-iron plate, secured to the under sideofthe "perch, and through which the king-bolt passes. VEitherlone or twoof the perch-couplings may be formed upon the head-block, as the styleof carriage may require, and while the strength of the head-block isgreatly increased, the size and cost are greatly decreased. v

In figa 12 and 13, A represents the pole-crab, and B the end ofthe pole.IThe arms, a a, of the crab are formed hollow, as is plainly sho'wn infig. 13, the holes c c passing entirely th'ro'ugh the arms, and thepolestrap studs b b are also formed hollow in the same manner; the polesd d cxtending through the studs.

By thus forming the arms a a hollow, they are stronger than solid armsof the same weight; besides, as malleable iron is strongest next thesurface, the arms have an increased surface of the tougher metal.; andAby forming the studs b hollow, they are larger of the same'weight, andconsequently cause less strain and wear upon the straps than smallerones would.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. A. spring-shackle, formed with the bed-plate A and the threesidedlink. B, united/by the wrought-iron rivet a, substantially as described,and shown in figs. 1 and 2.

2. The stud c or its equivalent, formed upon the bed-plate,substantially as described, and shown in lig. 2.

3. The sides d d of link B, formed to extend beyond the bar e, Iandcover the springeye, substantially as -aud for the purposes specified.

4. VThe rim a, formed upon bar-end. B, for the reception of the hangingiron, substantially as described, and shown in figs. 3 and 4.

5. The socket B, formed to receive the hanging iron a, and the bar A,figs. 5 and 6, substantially as and for the purposes specified.

6. The hollow metallic hanging bar A, substantially as described, andshown in ligs. 7 and 8.

'i'. The rims a a, formed upon the` metallic hanging bar A,substantially as described, and shown in figs.- 7 and 8.

8. Combining the malleable-iron yoke A with the wroughtiron stay d,substantially as described, and shown in 9.

g9. The hollow metallic-head-block A, substantially as described, andshown gs. 10 and 11.

10. The perchcouplings a, formed upon the head-block A, substantially asdescribed, and shown in figs. 10 and 11.

11. Forming the arms a a of the pole-crab hollow, substantially asdescribed, and shown in'g. 13. 12. Forming the pole-strap studs 5?:hollow, substantially as described, and shown in figs. 12 and 13.

i T. W. PORTER, H. K. PORTER.

Witnesses:

J. REED, D. C. LINseoTT.

